“We are so incredibly excited to announce something that we have dreamed of happening since we starting making ‘Supergirl’ – ‘The Flash’ and ‘Supergirl’ are teaming up!” said “The Flash” and “Supergirl” executive producers Greg Berlanti and Andrew Kreisberg in a statement. “We want to thank Grant Gustin for making the time to come visit (on top of his already immense workload) and all of the folks at CBS, The CW, Warner Bros. and DC for working this out. And finally thanks to the fans and journalists who have kept asking for this to happen. It is our pleasure and hope to create an episode worthy of everyone’s enthusiasm and support.”

Rumors and speculation on potential crossovers between CBS’ “Supergirl” and The CW’s DC superhero shows, which also include “Arrow” and “Legends of Tomorrow,” have swirled for months.

Rachel Bloom, "Crazy Ex-Girlfriend"The former YouTube star sang and danced her way to being one of the most successful transitions from social media to become The CW's latest star. A Golden Globe nomination later, and Bloom's breakout status was cemented.

Charlie Cox, "Daredevil"Nobody knew if Marvel's Netflix franchise dreams would work, but Cox's blind superhero Matt Murdoch was quickly embraced by fans. It didn't hurt that "Daredevil" was dark, gritty and quickly put a stamp on what type of quality Netflix and Marvel would be churning out for this new universe.

Aziz Ansari, "Master of None"Having made a career out of playing loud and obnoxious characters, Ansari took a subtle yet distinctive turn in his first leading role, lending warmth and heart to Netflix's latest breakout hit.

Shanice Williams, "The Wiz Live"A nationwide open call for the leading role in a live musical event could have yielded a disaster, but newcomer Williams turned out to be anything but, holding her own against legends like Queen Latifah and Mary J. Blige, and making an undeniable case for why she should have a long career ahead of her.

Rami Malek, "Mr. Robot"The hacker thriller may signal a new direction for USA Network, but fans know it mostly for the riveting performance of Malik, who at last found a leading role that allowed him to shine after praise-worthy supporting roles.

Alycia Debnam-Carey, "Fear the Walking Dead," "The 100"First she ruled over a post-apocalyptic society on The CW, then she encountered the very beginnings of a zombie apocalypse on AMC -- collecting hordes of new fans with every turn.

Jussie Smollett, "Empire"To pull focus from a tour-de-force Taraji P. Henson performance is not easy, but Smollett did just that, and made Jamal one of the standout characters among a cast full of them.

Priyanka Chopra, "Quantico"She was already one of Bollywood's biggest stars, but American audiences embraced Priyanka Chopra, who broke barriers by becoming the first Indian actress to lead a network show.

Tituss Burgess, "Unbreakable Kimmy Schmidt"The Georgia-born actor has mostly appeared in theater until now, but says his role in the Tina Fey-created series has caused people to stop him on the street and sing to him. We're sure the Emmy nomination didn't hurt, either.

Ruby Rose, "Orange Is the New Black"The Australian stunner turned heads when she showed up in Litchfield Penitentary on Season 3 of the Netflix hit. Piper's love life was already complicated, and Rose's Stella certainly didn't make things any easier.

Krysten Ritter, "Jessica Jones"Ritter's been known to audiences for her comedic chops, but Marvel's latest superhero showed off a much darker, more serious side. The Netflix Marvel cinematic universe is off to a very strong start with Ritter and Cox leading the way.

James Corden, "The Late Late Show"Corden already feels so at home on his CBS late night talk show, it's hard to believe he took over from Craig Ferguson eight months ago. How did we live before Carpool Karaoke?

Constance Wu, "Fresh Off the Boat""Fresh Off that Boat" not only gave audiences the first Asian family sitcom in 20 years, it also gave them Constance Wu, who brought charisma and sass to more than elevate the role of Jessica Huang, the coolest Asian mom ever.

TheWrap Rewind 2015: Fresh new faces playing superheroes, hip-hop stars and even a cool Asian mom brightened up our TV screens this year

Rachel Bloom, "Crazy Ex-Girlfriend"The former YouTube star sang and danced her way to being one of the most successful transitions from social media to become The CW's latest star. A Golden Globe nomination later, and Bloom's breakout status was cemented.